网络状态设置网络

public class Myutil {
   
/**
     * 返回值 -1：没有网络  1：WIFI网络   2：net网络
     */
    public static int getNetype(Context context) {
        int netType = -1;
        ConnectivityManager connMgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connMgr.getActiveNetworkInfo();


        if (networkInfo == null) {
            return netType;
        }
        int nType = networkInfo.getType();
        if (nType == ConnectivityManager.TYPE_MOBILE) {
            netType = 2;
        } else if (nType == ConnectivityManager.TYPE_WIFI) {
            netType = 1;
        }
        return netType;
    }
｝

     netype = Myutil.getNetype(MainActivity.this);
      if (netype !=-1){
 
       //设置适配器
       lv.setAdapter(my);
    new Myasknctask().execute(net);

   }else{
    b = new AlertDialog.Builder(MainActivity.this);
    b.setTitle("无网络是否设置网络");
    b.setIcon(R.mipmap.ic_launcher);
    b.setNegativeButton("取消",null);
    b.setPositiveButton("确定", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialogInterface, int i) {
            Intent wifiSettingsIntent=new Intent("android.settings.WIFI_SETTINGS");
            startActivity(wifiSettingsIntent);
            b.create().dismiss();
        }
    });


    b.show();
}